Al Gietzen wrote:

In a recent exchange about engines on our Velocity builders e-mail list, one
happy Lycoming user states:

"Say what you will, a well tuned Lycoming will give a BSFC of .375.
That's about as good as it gets for any four-stroke gasoline engine.  There
is just no truth to the "Lycosaur" paradigm."

My reaction is "in your dreams".  But then I'm prejudiced. (Probably not the
only one on this list).  Anybody ever hear of a BSFC like this on a Lyc
4-cylinder?

Al Gietzen

No way. Particularly as Lycoming does not allow running lean of peak.
Too hard on their precious $250 each sodium cooled exhaust valves.

More like 0.45. 0.375 BSFC is turbo compound country.

Paul Lamar
 
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